High temperature increases the masculinization rate of the all-female (XX) rainbow trout "Mal" population.

ABSTRACT: Salmonids are generally considered to have a robust genetic sex determination system with a simple male heterogamety (XX/XY). However, spontaneous masculinization of XX females has been found in a rainbow trout population of gynogenetic doubled haploid individuals. The analysis of this masculinization phenotype transmission supported the hypothesis of the involvement of a recessive mutation (termed mal). As temperature effect on sex differentiation has been reported in some salmonid species, in this study we investigated in detail the potential implication of temperature on masculinization in this XX mal-carrying population. Seven families issued from XX mal-carrying parents were exposed from the time of hatching to different rearing water temperatures ((8, 12 and 18°C), and the resulting

SUBMITTER: Valdivia K 

PROVIDER: S-EPMC4264747 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature